Wrench



(No Model.)

A. W. STOSSMEISTER.

WRENCH.

N0. 328,980. Patented Oct. 27, 1886.

122F612 far:

N PETERS PhmLilhagr-mhor. Whhingllm n c.

U ITED STATES 7 PATENT Orricri.

ALBERT W. STOSSMEISTE 0 NEWPORT, KEN TUGKY.

WRENCH.

fiPECIEIOATION forming part of Letters Patent No. 328,980, dated October 27, 1885.

To all whom it may concern.-

Be it known that I, ALBERT W. STossMEIs- TER, a citizen of the United States, residing at Newport, Kentucky, have invented new and useful Improvements in renches, of which the following is a specification.

Myinvention relates to adjustable wrenches, its object being to produce an economical and efficient implement for ordinary use, with a wide range of adjustment to screw-nuts and other objects of different sizes.

To this end it consists in the construction of a wrench by casting in two parts, fitted together, and operating by means of an adj usting-screw, the wrench head being so constructed as to form three or more jaws, giving a range of adjustment from nothing up to a much greater limit than is usual in wrenches of this character.

Mechanism embodying my invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective view of my improved wrench complete. Fig. 2 is a vertical longitudinal section of same; Fig. 3, plan views of upper and lower sections separated; Fig. 4, an end view of sections separated; Fig. 5, a vertical crosssection on line 3/ 3 Fig. 6, a vertical cross-section of a modified form of construction of guidelugs; Fig. 7, a modified form of construction of operating-head.

As indicated in the drawings, my improved wrench consists of two main parts or sections, AA, preferably formed bycasting, and adapted to fit one upon the other, and permit a longitudinal adjustment by means of a thumbscrew, B, as presently shown. The rear portions of the sections A A are preferably formed as approximately equal halves, by longitudinal division, of a rounded handle, convenient for the proper manipulation of the implement, while the forward portions, constituting the wrench-head, with two jaws of differing caliber, one at each side. At this portion of the implement the lower member, A, is extended beyond the upper member, A, and terminated by a laterally-enlarged head, 0, whose extensions beyond the neck a of the member A constitute the outer jaws of the operative-jaw spaces .9 s, and whose upward extension or increased thickness is utilized to form a third operating space, of which the extreme end 0 of the member A forms the opposite wall.

Application filed June 20, 1884. Serial No. 135,475. (No model.)

The upper member, A, is also extended laterally at its end to form the opposite jawsfor the spaces 88, and also downward against the sides of the neck a, to constitute guide-lugs g g, to assist in retaining the parts in the proper line of movement,- but for the purpose last mentioned, and also to give strength to the parts in resisting strains of use, I form a stud, d, cast upon the lower member, A, and projecting from its upper surface, arranged to operate in a corresponding slot, 6, formed in the upper member, A.

When the two members A A are placed together in position ,the stud (2 may be upset over the adjacent edges of the guide-slot e and a washer inserted, and the parts thus held together, at the same time permitting the desired longitudinal adjustment, as shown in Figs. 3 and 5.

Instead of the vertical stud d, I may cast on the sides of the lower member, A, projecting lugs Z Z, adapted to fit and slide in suitable grooves,m m, in the upper member, A, as shown in the two parts of Fig. 3 and in sectional Fig. 6.

The rear portion or handle of the implement is cast hollow, the rear wall of one being somewhat arched, and that of the other correspond ingly depressed, as shown in Figs. 2, 3, and 4, to assist in guiding the parts in proper line of movement.

Inside of and across the body of the upper member, A, is cast a cross-lug, f, to receive the manipulatingscrew B, which extends thence through the rear wall of the other member, as shown in Fig. 2.

As thus constructed the operation of the implement is sufficiently obvious to render a detailed description unnecessary.

By manipulation of the screw B the members A A are caused to slide one upon the other, and the spaces 8 s s enlarged. to any desired size within the limit of the implement.

It is obvious that various forms of j aw-spaces may be used without affecting the essential features of my improvement. 1

Imay, for commercial purposes, manufacture wrenches of a small size with a single opcrating-jaw space on one side, the other side being rounded and closed, opening only when r I the manipulating-screw B is turned; or, as in Fig. 7, I may arrange the head to close en tirely, leaving no permanent jaw-space, the object of such modifications beingto furnish cheap wrenches adapted for specific purposes; or, as shown in Fig. 1, I may construct wrenches so arranged as to give unequal jawspaces on the two sides, which, in combination with the space 8 gives a wide range (f adaptability, all provided either with vertical stud d and slot e, or with horizontal side lugs, Z l, and grooves m m.

I claim and desire to secure entof the United States- 1. The improved wrench consisting of a twopart hollow handle held and reciprocally moved by an adjusting-screw at the rear, and extending into the fiat bars in front, adapted by Letters Patto move longitudinally and be retained one upon the other, one such bar being provided with lateral wings projecting below at the sides of the other, and the other bar with a A, constructed as shown, one part provided with lateral projections g g and the other with a head, 0, in combination with an adjustingscrew, B, arranged at the rear and actuating the parts longitudinally, substantially as and for the purpose set forth. Intestimony whereof I havehereunto set my hand in the presence of two subscribing witnesses.

ALBERT W. STOSSMEISTER. Witnesses:

L. M. HosEA,- O. F. SHAPPELL. 

